System of regulating fluid-pressures.



PATENTE D OCT. 9, 1906.

F. ROBBIN.

SYSTEM OF REGULATING FLUID PRBSSURES.

APPLICATION FILED JUNE 21, 1905.

2 SHEETS-SHEET 1.

PATENTED OCT. 9, 1906.

P. ROBBIN. SYSTEM OF REGULATING FLUID rans'snass.

APPLICATION FILED JUHE 21, 1905.

: S-HEETS-BKEET a.

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31 ruewboz FREDERICK ROBBIN, (is NEW roan, u.

' SYSTEM OF. REGULATE mi e capes.

Specification of Letters Patent.-

NG FLUID-PRESSURES.

Patented Oct. 9, 1906.

Application filed June 21, 1905. Serial No. 266,255.

Zo all w hom it may concern: I Be it known that I,.FREDERI0K Ronnnv, of New York city, in the county and State of New York, have invented certain new and useful Im rovements in Systems of Regulating Fluidessures and I do hereby declare the following to be a full, clear, and exact desleription of the samdi, reference being had to t e accom an g aw' formin a art of spgcifibia tion, an c l io the r fer nce characters marked thereon. invention relates, rimarily, to apparatus for mixing gas and liquid, and more articularly for carbonating water or other 'everages. I

It comprises an organization wherein the water-pressure andthe gas at a greater pressure than that of the water act in op osition' to control the suppiyof gas and in w "oh the lglas, stored under 11 pressure in the usual olders, is reduced to an approximately constant pressure and the water may be supplied oma source subject to comparatively wide .variations of pressure, the apparatus being so arranged that however the water-pressure mayfluctuate a desired ratio between the gas supply and the water-supply may be substantial y maintained.

he apparatus comprises also an improved regulating apparatus whereby the pressure of one fluid may be controlled by that of another.

In the drawings, Figure l is a diagrammatic view showing one method of connectthe line 3 3 of the and Fig. 4 is a horizontal sectional view on employed lng up a system of regulators embodying m y invention. Fig. 2 is a vertical sectional view through a system of regulators embodying my invention.- Fig. 3 is a vertical section on middle regulator, Fig. 2;

the line 4 4 of the first regulator, Fig. 1.

. In the several views, the same characters of reference designate simllar parts.

' My improved system of regulating or controlling uid-pressures and the regulators in connection therewith is intended for use generally in all instances where it is desirable to obtain an accurate regulation of-a fluid or a balance in ressure between one fluid and another, and-t erefore I do not limit the sec e of the invention as ar use; but when em a lied to'any artic i p the liquid and gas p foyed for controlling rnately the highest pressures in carbonating ap aratus it errects bodh a'marked improvement in the quality and uniformity of the roduct, as well as the the ex ense and inconveniences of'em loying specia pumps for supplying the liqui to the apparatus at the requisite pressure; but the pressure of the liquid from such sources is constantly fluctuating, and unless the flow of the gas is governed so as to maintain-a predetermined balance relatively to the waterpressure at every fluctuation of -the latter the quality and uniformity of the carbonated liquid will vary considerably, an overbalance of either gas or liquid pressure resulting fre quently in totally suspending the mixing 0 eration and causing either pure gas or liquld to be blown out of the draft-arm. By the use of my invention these defects are cured and the carbonating process is carried on antomatically, as the ap aratus is self-regulating notwithstanding t e changes in pressure of either the gas or liquid and is not subject to the changes in atmospheric temperature. My invention in its present form comprises a series of regulators A, B, and C, respectively, the regulator A being connected by pipe 1 toa tank or other source of gassupply 2 and by the tube 3 to inlet of the re ulator B, the outlet 4 of the regulator B leading to a mixing-chamber construction. The pipe 6 leads from a suitend of the latter connecting with the regulator O and its opposite end with the chamber 5, the pipe 8 being employed for drawing ofl' fluid from this chamber.

I do not limit myself to any particular form of regulators, but in the present embodiment the regulator A is capable of reducing the initial pressure of the gas to approxipressure attained by the liquid and delivers the gas thus reduced to. the regulator B, and it comprises acasing 9, formed in several parts for convenience in manufacture and handling, the interiorof the 5 of any suitable casing being divided by the flexible diaphragm 10 to form chamber 11 at one sir thereof into which the inlet 12 This inlet is controlled by a valve com i in its present form a yoke 13, which i'nov able with the diaphragm and carries p .14., preferably adjustable hereon and having a suitable packing 15, itrranged to cooperate with the nozzle 16 of the inlet, which has a small discharge-aperture therein. Pressure within the compartment 1 1 will tend to operate the diaphragm to close the valve; but in order to set the device so that the :alve wi ll close only when the pressure in this compartment reaches a desired point the opposite side oi the dia hragm open to the atmosphere and is acte upon by a compression-spring 17, one end of wh h is seated against the diaphragm, while its opposite end bears on a stop 18, the latter being adjustable by means of the screw 19, so that the'spring may exert diiierent ressures on the diaphragm ten ding to open t e valve, and thus balance the pressure in the compartment 11.

The tube 3 conveys the gas from compartment 1.1 to the inlet 20 of the regulator l3, discharge of gas from the inlet of this 1 tor being also controlled by a suitable i ilve, comprising, in the present instance, the cap 14*, having a packing 15 to cooperate with the nozzle 16 of the inlet i i), the i'novable parts of the valve being carried by the yolre 13", which in turn is operable with the diaphragm 21, the latter forming a compartment 22, into whicl'i the inlet 20 discharges The upper side of this diaphragm is open to the atmosphere and is provided with a stem 2'3, which extends upwardly throiwh the casing, while the pipe 4 leads from the compartment 22 to the chamber 5.

The regulator C comprises a casing of suit able form, having a diaphragm 24- thcrein to form a compartment 25 beneath it, a passage 26 being formed in the casing tor establish-- ing communication between the liquid-supply pipe 7 and the com artment 25. A guiding-stem 27 is preferab y attached to the diaphragm, having a fluted portion operating in this assage in such a way as to guide the diapllagm and still not interfere with the passage oi liquid between the compartment 25 and pipe 7, and the opposite side of the diaphragm has an upwardly-extending stem 28, similar to the stem 23 of regulator B The regulators B and C are held in fixed relation by the threade'l support 29, and on this support is mounted a hilcrumarm 30, which is movable 'reely between the two regulators and is locked in adjusted position by the locking-nuts 31 and 32, mounted on the threaded support, the upper portion'of the arm being provided with a screw or fulcrum 33, which is adjustable in a direction at right angles to the adjustment .tor the fulcrunnarm, thus providing adjustment for the fulcrum in i l l l "la I it being Qlliv c y" such an arrangement motion oi (ll' pnragm of regulator Q,

due to lluctuatni i i liquid-pressure, will be transmitted in proportion to the valve of regulator ll, high pressure of ii-1' uid causing the stem 28 to move up, rocking the lever 34 on its fulcrum and depressing the stem 23 of regulator B to open the valve to admit a sufficient quantity of gas to balance the increased pressure oi the liquid, and a decrease in liquid-preset will in the same way allow the valve controlling thev gassupply to close or reduce the pressure of gas delivered by regulator 1B,

In operating a iluidpressure-regulating system employed in the connection described and illustrated the by the pipe 1 to a suit under pressure, one or gas under initial pre' litteen hundred. poun being generally employed in connection with earbonating apparatus, and the gas entering the first regulator discharges from the inlet 12 thereof into the compartment 11, subject to the control of the valve which is operated by the diaph 'm, the latter being operated upon by the valve and retain it open until the gas admitted to the said compartment reaches such a pressure that it will operate the diapr agm in opposition to the spring, thus closing the valve to interrupt the supply of gas unti the compartment beneath the diaphragm falls, and then the spring will be able to reopen the valve, and in this way a practically uniform and constant pressure is maintained in the compartment 11 of the regulator A.

Finn the regulator A the gasunder the reduced pressure enters the compartment 22 of iator B, under control, however, of the itor-valve, and as this valve is arranged to close by pressure in compartment- 22,act ingon the diaphragm 2-1, and to open by 'ure of the regulating fluid or liquid in chamber 25 of regulator C through the stems 23 and 25 of the regulators B and C and the rocking lever 3%, connecting them, a' comparatively low pressure of liquid will operate with less force on diaphragm 24 and. may cause the valve of regulator B to partially open to bring the gas-pressure into balance with the liquidtiressure, and when the pressure of from regulator B isequal to that of the liquid the valve controlling the gas lesource oi gas-supply .re tanks-2 containing l 5: of approximately the spring i? to open will remain closed by reason of the gas-pres posing gas-pressure on gulators B and G,

ulator A is connected l the gas-pressure inthe under side of diaphra m 21 of regulator B, causing the valve of this regulator to open and admit a sulii cient' flow of gas to balance that of the liquid or other fluid. s

In operatinga carbonating apparatus it is preferable to supply the gas to the mixingchamber at a somewhat higher pressure than that of' the liquid at all times in order that the gas will be properly forced into theliquid, and in the resent construction. practically any dcsirei "atio of pressures may be maintained between the. liquid and gas notwithstanding the iluctuations in pressures of the liquid, by simply shifting the fulcrumarm 30 into the proper position between the regulators B and 0. An independent adjustment is elieeted, and by adjusting the screw 33, which serves as a fulcrum by which the parts may be adjusted, the valve of regulator B will'operate with precision at every .liuctuation in pressure of the liquid or regulating fluid.-

A system of fluid-pr issure regulators embodying my invention is capable of being employed in various connections where it is necessary or desirable to obtain an accurate regulation of one fluid by another in order that they may balance or bear a predetermined ratio or proportion of pressure notwithstanding fluctuations that may be constantly occurring in either one or both of the sources of supply. Changes in. atmospheric temperature' may also occur without aliecting the precision with which the regulators operate, for while expansion and contraction of the spring of regulatorAdue to variations in temperature will operate on the corresponding valve with varying force, resulting in variations in the pressure delivered by the first regulator, when the reduced pressure reaches regulator B expansion and contraction of the parts will occur equally, there being no spring employed. This is an important matter, as the movement of the valve While controlling the flow of the gas under high pressure is hardly perceptible, and on account of this fact regulators depending on a spring require rcadjustment for practically every variation in temperature, Whereas by avoiding the use of a spring or similar part, as in the regulators B and C, temperature variations will have no efl'eot on the regulation of the fluid.

I claim as my invention 1. In means for regulating fluid-pressures, the combination with a casing, a diaphragm inclosed therein and forming a iluid-pressure compartment at one side thereof and open to the atmosphere at its 0 )POSllLQ- side, a valve inclosed within and discharging into said com artment, and arranged to be closed by fiuic -pressure in said compartment acting on said. diaphragm, of a second casing, a diaphragm therein adapted to beoperatcd by fluid-pressure, and a controlling member operated by the second-mentioned diaphragm and connected'to the opensideofthe firstmentioned diaphragm ,said member normally operating to open the controlling-valve,

2. In a regulator forcontrellin "fiuidfires sures, the combination with a cas1ng,';a valve inclosed therein for controllingthe discharge of fluid into the easing,'and a diaphragm connected to the valve and. arranged to beo'perated by fluithpressure Within the casing to normally close said valve, of a second casing, a diaphragm therein adapted to be operated by fluid-pressure and means connected to the second diaphragm and operating on the firstmentioned diaphragm to open said valve in the first-mentioned casing.

35. In means for regulating fluid-pressures, the combination with a pair of hollow casings supported iniixedrelation, adiaphragnifitted in each casing open to the atmosphere at one side and forming a fluid-pressurecompartment arranged. in each casing at the side of the diaphragm op osite to that open to the atmosphere, a i'lll-l pressure-controlling valve inclosed within one of said compartments, operatively connected to the respective diaphragm, and through which. one fluid is admitted to said compartment, and means for admitting another lluid to the other pressurecom artment, of an equalizing-lever operative y connected to those sides of both diaphragnis open to the atmosphere.

4. In a system of regulating fluid-pressures, the combination 'with'a regulator connected to a source of gas-supply and capable of maintaining a flow of gas therefrom under substantially constant pressure, of a second regulator arranged to receive the gas from the first regulator and having a controllingvalve therein, and. a third regulator connected to a source. of liquid-supply under fluctuating pressures, having a part therein 0 erated by the fluctuations of pressure in the ply and operating on the valve of the second regulator for controlling the flow of gas therefrom.

5. Apparatus for charging water, supplied under variable pressure, with carbonic-acid gas, comprising the combination of pressurereducing means for delivering gas at approximately constant pressure in excess of the maximum waterprcssure from a holder in which it is contained under higher jpressure a regulator to which the gas is delivered at such approximately constant pressure, comprising a gas-supply valve adapted to be closed by the ressure of the gas supplied to the regulator liy said. valve; and means whereby the vari able pressure of the Water is-caused to act upon said valve in opposition to pressure of the gas.

6. Apparatus for charging water, supplied under variable pressure, with carbonic-acid gas, comprising the coniliiin on of pressurereducingtmeans for delivering gas at an approximately constant pressure in excess of quid-sup- -IIO 3 sssmee themaximum Water-pressure from a holder water is caused. to act upon said valve in one in which it. is contained underhigherpressure; direct/ion only and in oppssition to pressure 10 a regulator to which the gas is delivered at of the gas.

such approximatelyrconst-ent pressure, com- FREDWRTCK RGBBIN prising a gas-supply Valve adapted so be l elmsed solely by the pressure of the gas supt Witnesses:

plied to the regulator by said valve; and JAY LEHRBACH, means whereby the variable pressure of the M. M. CORWIN. 

